Bangladeshi inventor Ashis Paul has figured out how to repurpose plastic bottles into a low-cost, easy-to-make, electricity-free air conditioner that can help the country’s poorest better tolerate the sweltering summer heat.
The science behind the Eco-Cooler is based on the idea that the bottleneck becomes a funnel that compresses and cools the air that runs through it by about five degrees, according to the Eco-Cooler website. It’s the same principle that governs blowing air through pursed lips — the air comes out cooler despite the body’s 98-degree-Fahrenheit temperature.
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Source Credits: Mic. Image above is for illustrative purpose only and shows a lady enjoying the comforts of a regular AC.